【作者】 李其仲；

【导师】 柴光远；

【作者基本信息】 西安科技大学 ， 机械设计及理论， 2008， 硕士

【摘要】 本文针对宝鸡卷烟厂薄片烟丝生产线异地技改的需要,对生产线上三个自动配料系统的设计和开发中的关键技术进行了研究,开发了干料、湿料、干湿料三个自动配料控制系统。论文主要内容包括配料系统整体设计、工艺流程设计、硬件的设计选用、软件设计和系统调试。整个配料系统采用基于现场总线PROFIBUS-DP的控制系统,控制上采用分布式I/O、HMI、变频器、智能称重仪表等,运用PROFIBUS现场总线的DP(DecentralizedPeriphery)协议构筑了一个分布式的PLC控制系统,完全实现了配料的自动化、精确化、可视化要求,满足了技改的需要。干料配料系统增加螺旋电子秤、称重仪表,实现配料的闭环控制。设计一套湿料自动配料系统取代手动配料,完成了湿料配料的总体设计、机械选型、PLC编程、HMI编程。针对湿料配比的特点,为了达到精确的配比精度,做了部分的创新的设计和改进。针对目前在干湿料配料控制中配料精度不高的问题,本文引入模糊控制算法,对称量速度和称量时间同时进行控制,以提高配料精度。该配料系统的应用实现了宝鸡卷烟厂薄片线配料系统的自动化,满足了配料精度的要求,并且在实际运行中达到了预期的效果。本方案对其他行业的配料控制亦有很好的借鉴和参考价值。更多还原

【Abstract】 In order to meet the technological innovation project of different place in tobacco leaf line, this article takes a research on the design and the key techniques of developing in three automatic burden systems, and an burden systems of the dry materials, an burden systems of the wet materials, an burden systems of the dry and wet materials developed. The main content of this paper are as follows: the overall design, the hardware design selects, the technical process design, the software design and the system debugging design.The system of automatic burden based on PROFIBUS-DP field bus. A distributed-PLC control system which based on the protocol of PROFIBUS-DP (Decentralized Periphery) use distributed I/O, HMI, frequency converter, intelligent weighing instrument and so on. It completely realize automation, accurate and visualization of the burden.The burden system of the dry materials forms closed-loop control through increase spiral electronic scale, weighing instrument. It has designed an automatic burden control system. Finished the general design, mechanical choice, PLC programming, HMI programming. In order to improving the accuracy, this paper makes some beneficial attempts and approaches. Because of the lower accuracy in burden system of the dry and wet materials, use fuzzy control to adjust the weighing speed and weighing time. The practical running shows a good effect, and the satisfactory results have been obtained.The burden systems in tobacco leaf line of Baoji cigarette factory achieve the automatic procedure, and the system can meet the need of burdening accuracy and achieves the desired result. This plan also has the very good model and direct reference value to other professions burden controls.更多还原